| 单词 | melanism |
| 例句 | The zoo said while Napo and Inka had very different coat colours, there was "no such species as a black panther" and Inka's dark colouring was a result of a genetic mutation known as melanism. Chester Zoo hopes new black jaguar will help viable population aim 2023-08-04T04:00:00Z Kallisto is a rare black Amur leopard because of melanism, a condition that produces an excess of black pigment. Zoo celebrating rare Amur leopard cubs’ first birthday 2020-01-25T05:00:00Z They found that melanism varied from place to place. The Mystery of the Melanistic Manta Rays 2019-10-14T04:00:00Z The creature’s extraordinary colouring is caused by melanism, the opposite of albinism. US briefing: border deal, El Chapo and a California police shooting 2019-02-13T05:00:00Z The animal – whose coat is sooty black as a result of melanism, the opposite of albinism – is extremely rare. First photographs of rare African black leopard captured in more than a century 2019-02-12T05:00:00Z If the researchers' findings are correct, the turtle-headed sea snake would join a short list of animals that show “industrial melanism.” Pollution Is Turning Sea Snakes Black—for a Surprising Reason 2017-08-10T04:00:00Z In all these phases, now generally admitted to be varying degrees of melanism, the tip of the tail is white, as in the normal red phase. A Journey from Prince of Wales's Fort in Hudson's Bay to the Northern Ocean in the Years 1769, 1770, 1771, 1772 New Edition with Introduction, Notes, and Illustrations 2011-12-26T03:00:13.520Z This trait, known as melanism, is seen with some frequency on land. The Mystery of the Melanistic Manta Rays 2019-10-14T04:00:00Z Only one case of melanism was observed among all the specimens of both species examined. Speciation and Evolution of the Pygmy Mice, Genus Baiomys 2011-12-15T03:00:11.933Z I do not know of a case of melanism. The Badger A Monograph 2011-07-25T02:00:12.053Z What advantage melanism brings in these circumstances is obscure. Evolution and coat colour: Well spotted 2010-10-21T11:18:00Z The other cases of this interesting exhibit show a large variety of birds and animals under conditions of somewhat abnormal variation, in the one case of albinism and the other of melanism. A History of Science, Volume 5(of 5) Aspects Of Recent Science Hence, also, a reason why albinoism, although freely occurring in captivity, never maintains itself in a wild state, while melanism does. The Galaxy Vol. 23, No. 1 Albinoism and melanism are of this character, as well as most of those cases in which well-marked varieties occur in company with the parent species, but without any intermediate forms. Contributions to the Theory of Natural Selection A Series of Essays There was one black jaguar-skin; melanism is much more common among jaguars than pumas, although once Miller saw a black puma that had been killed by Indians. Through the Brazilian Wilderness In the Natural History Museum in London there are stuffed examples of albinism and melanism in the lower animals. Anomalies and Curiosities of Medicine Eventually I heard of the phenomenon of melanism in animals, less rare in snakes perhaps than in animals of other classes, and I was satisfied that the problem was partly solved. Far Away and Long Ago Nevertheless, it may be worth while to give the few cases which I have been able to collect, relating chiefly to colour,—simple albinism and melanism being excluded. The Descent of Man True total melanism is unknown in man, in whom is only observed partial melanism, characterized simply by a pronounced coloration of part of the integument. Anomalies and Curiosities of Medicine |
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